Global warming is one of the greatest threats – and opportunities – of the 21st century. Our fate will be determined by the choices of 7.4 billion people and counting. We are social scientists studying the causes and consequences of public opinion and behavior. We help governments, media, companies, and advocates communicate more effectively. And we publish an online climate news service and daily national radio program, Yale Climate Connections. Our mission is to advance the science of climate change communication, help leaders communicate more effectively, and increase the public's understanding of climate risks and opportunities. We conduct scientific research on public climate change knowledge, attitudes, policy preferences, and behavior at the global, national, and local scales.